Improvement in safety attachments to pocket-books



G. S K-NAPP. Safety-Attachment f'or Pocket-Books. 110163.017.

Patented May 11, 187 5- 1 IIIIIIIIA 4 711,111,111. lIId'II/II'I I'wineasesf HE GRAPHIC C0.PHOTO LITH.39 8M PARK PLAUEJLY.

ATENT GEORGE S. KNAPP, OF CHICAGO, ILLINOIS.

Specification forming part of Letters Patent No. 163,017, dated May 11,1875; application filed March 15, 1875.

To all whom it may concern Beit known that I, GEORGE S. KNAPP, ofChicago, in the county of (look and State of Illinois, have inventedcertain Improvements in Safety Attachments for Pocket-Books, of whichthe tollowing is a specification:

My invention relates to a device tobe applied to pocketbooks, to preventthem from being lost or abstracted from the pocket.

The invention consists in the peculiar construction and arrangement oftwo' swinging arms, to spread apart within the pocket, and a slide, bywhich they are operated and locked in position; and also in thecombination therewith of an alarm, to give notice in case of the devicebeing operated by improperv parties.

Figure 1 represents a face view of my device applied to a book, the twoarms being closed together. Fig, 2 represents a similar view of thedevice with its arms spread apart as when in use, and Fig. 3 representsan edge view of the device in position.

A represents a thin metal plate, provided with lips or points a, forsecuring it in place on the book, and having its edge curled or bentbackward in such manner as to support the plate and leave a space underor behind it when it is in position. The plate is also provided with twovertical slots, 1), a notch or hole, 0, near its upper end, and twostuds or pivot-pins, d, near its sides, as shown. B represents a slide,mounted under or behind the plate A, and provided with a curledprotruding end or thumb-piece, c, with two studs, 9, which projectthrough the slots in plate A, and with a lip, h, to enter the notch 0 inthe plate.

The slide is made of elastic metal, and is bent or sprung in such mannerthat when pushed inward its lip It will spring up into the notch e, andprevent the slide from moving until its end is depressed to disengagethe lip.

O 0 are two swinging arms, each having its inner end pivoted on one ofthe studs 9 of the slide, and provided with an oblique slot, i, whichreceives one of the studs d on the plate g. The two arms are alike inall respects, except that one swings to the right them outward inopposite directions, as shown in Fig. 2.

In order to prevent the. ends of the arms from cutting the pocket, theyare folded or bent into a round or spherical form, as shown.

In order to give an alarm in case of the device being operated bypickpockets, I secure to the back of the plate A a vibrating spring, D,a bell, or any other device to be operated by the slide, which will givea clear and distinct alarm, either an audible one, or one which will befelt by the person carrying the book.

In using the device it is secured to the side of the book in the mannershown, and then, as the book is inserted into the pocket, the slide ispushed inward until the arms are spread apart within the pocket andlocked in position by the lip of the slide engaging in the notch in theplate.

The arms are made to spread to a width greater than that of the mouth ofthe pocket, and, consequently, when locked in position, the book cannotpossibly be lost or withdrawn from the pocket.

When it is desired to remove the book from the pocket, the end of theslide is depressed to unlock it, and then it is drawn outward to closethe arms together.

When the arms are closed, the device presents a smooth and compactappearance, and is in no way objectionable in handling and using thebook.

The alarm attachment is not a necessary part of the device, and may beomitted when desired.

I am aware that safety attachments with swinging spreading arms havebeen heretofore made and used, but of a different and far morecomplicated construction than the one herein described.

Having thus described my invention, what I claim is l. The combinationof the plate A, slide B, and slotted swinging arms (J, as shown anddescribed.

2. In combination with the swinging arms 0 and slide B, an alarm, D,operated substantially as described.

GEORGE S. KNAPP. Witnesses:

PHILIP T. DODGE, WILL W. DODGE.

rrron.

